Type-writing machine.



F. A. HART. TYPE wmmsmcmm. APPLICATION FILED JAN-8, I917.

Patented Oct. 8; 1918..

M'fnesses a STATES Eminent on ,A.-- near, or NEWABIQI'NEW. JnnsEY, AssIGNon ro ommnwooocom, rtmimo'lnaonmn comm; or NEW roux, m y a conronsrrou' or NEW roan.

- urn-WRITING u'lacnmn teale160.

mama, l n that I, Fnmniucx Heller, f the United States, resid ng in l' Improvements in Type writing Ma'- s'of {which the following is aspecificm nvention tog an improvement ew'ritin'g machines, and moreespedifie [,ntialfeed:betwe'ejn a work-sheet on "-jthefiplatenqand a tallly strrp" also on the ten bene'a'th thfewor she e't. This "invenfijhnimproveinentton my appllcation 2,944; or Januar 16, 1917.) c

movemen could be eifectedpbetween a .worl ra tallystripiy The object of time h elines on the'worksheet' spaced art fro each othera considerable dismi sol as a be: easily legible,-whilethe er sofas greatly condense the same. il ftheworkesheetbe stripped too quickly cm the pletnyiit has a tendency, to drag ly-strip with it;; T1118 might result win a gi otl er wcrk members, and in other cases 111 1 ftll displacement 'of-thetally-strap, so that w on a subsequent'work-sheet is placed on jthe; platen proper spacing or alinexnent h K-QQM bW Qd-Y' iccordin to oneizfeatureof the present i i r wem t e yp may be P iv'e y fed byigmeans connected to be driven {the sametime thez laten is line-spaced. l 0 ,The' extent of; movement, however, may be difl'ferent thatislito-say', the tally-strip may be, s ns'iderablytlessthan the workto have thercord on the tally -v 7. rip. ensedin as small a space epo 45 Bible there'would be a tendencyfor the V tall tpf'bedragged along by the platen.

\ "1,,and thejworli-sheet"because of the greater moveinent thereof, meansis provided foreffecti Ga 80 which "$511101;

; ingzijoint'of the platen.) ,This drag 1n the v pregpt'fcaseus made; resilient by, means of a spring? Ewen ifi-the tallyrstl'ilj shouldbe Specification 6: heir Plhnt. ap ii mon meg anuar aim, are] m. 141,092.

J the county of Essex and State of Jersey, have invented certain new and Mamas November 9,'1914.'(Patent t s fls hown in the ,abo'i ze-mentionedhp Rheation, how a fdifl'erent al 1111B? feeding .r in casethe driveto the reel *for'whmh provision is made.

talg striptort record has its lines close to t some cases in the tearing of one or the the tally-strip.

dragon, that end .of the tally-strip ;yet come around fto the printpatented Oct; s, 1918;

pulled around a certain amount, it will readjust itself as soon as the extra feeding pull has ceased.

-The b ack dra on the tallyQstrip is ohtained by the ta ly-strip itself win dingiup a spring to a certain tension which tension is hunted by a slip'clutch arrangement loe- 60 tween the'tallystrip and the-spring, thus I giving an adequate but not excessive back- 'p ull' on the tally-strip.

In the present instance. the drive or feed ing of the tally-strip isobtained. by winding the. strip on ya reel which; is positively driven by a pawl and-ratchetmechanism, distant :Eromthe reel and adjacent to the linespace mechanismtofz the laten. Inor-f der t'o prevent anyback lash y the reel un 70' winding a one-way actingdo is provided at the reels. This also enab es the main-c tenance of the tallystrip in p o er position nt'errupted,

Other'features and advantages will here inafter'appeare In the accompanying drawings; Figure 1 is a' 'per'spective view of the platen-and the various parts enabling a diffe'rential drive between the tally-strip and the Work-sheet. l I

Fig. 2 is a detail section showinggthe manner of] attaching the fresh paper or tally strip rollto the mechanis'm; y Fig. 3 is a vertical section, looking from '1eft, t0 right, of Fig. 1.

Egg. 4 isja. vertical section taken through the evice for obtaining a limited retard on i Fig? 5 is a fragmentary section, showing the manner ofattaching the frictiodlclutch hub to thespring shaft. J i- Fig. 6 is 'a vertical section from front to rear taken about mid-way of the tally-strip; winding and unwinding mechanism. v Referring more particularly to'the se'pa- "rateparts of this invention, 1 indicates the laten which issupported in the usual way" y meansof a'shaft 2; on-an inner. carria e or platen frame. 3. In order to rotate t e '1 platen, there is rovided a line-space mocha hism which ineiildes.v the ratchet wheel 4 se-Y cured to the shaft 2 at the left hand end thereof. The ratchet 4 may be difierentially 0 operated as is common in theUnderwoodj;

typewriter, by means of a pawl 5 carried by a slide 6 which is operated by a linespace lever 7.

The platen 1 may be used to support a Work-sheet of any desired type, which in the present case is used to cooperate with a tallystrip 8 to obtain a series of individual pieces of work on separate work-sheets and a condensed duplicate of all the pieces of work on the tally-strip. The t-ally-stri 8 is furnished in the form of a roll 0 paper 9, whose method of unwinding and feeding around the platen 1 will now be describeda' Mounted on the sides of the platen frame 3 there are provided a pair of brackets 10 and 11 which form supports for shafts 12 and 13 extending parallel to the axis of the platen 1. The shaft 13 is detachably mounted on the brackets 10 an 11 in a manner described in my above-mentioned application so that a pair of sped heads 14 and 15, F igs; 1 and 2, may be loosely mounted thereon. Each of these spool heads is provided with a split expanding tube 16, so that it may be wedged within the core 17 of the reel of tally-strip 9. The tubes 16 are provided with suitable barbs 18 so as to firmly bind on the core 17, and thus rotate with the core and the tally-strip 9 as the tally-strip is unwound from the latter. Loosely mounted. on each of the tubes 16 there is provided a disk 19 which properly guides the tally.- strip as it unwinds on the reel.-

In the case of the right hand hub 15 there is also provided a gear 20 which is secured to the hub to rotate with the core 17 as the tally-strip unwinds from the latter. This gear 20meshes with a gear 21 so as to drive the same. The gear 21 is loosely mounted on ahub 22, Fig. 4. The hub 22 extends up on one side'of the gear 21, while a friction disk 23 faces on the opposite side of the gear 21. A spring 24 acting on the disk 23 causes the gear 21 to be clutched to the hub 22 by friction so as to enable the gear 21 to .drive the hub 22, unless there is an excessive back 'd'rag onthe hub 22. The reaction of the spring '24 is taken care of by a washer 25 also mounted on the hub 22 and prevented from movement from off the hub.

The hub and openings in the disk 23 and the Washer 25 are fiat sided so as to prevent relative rotation. The hub 22 is mounted on a shaft 26 so as to rotate therewith, as by having its opening and the shaft 26 flat sided. The shaft 26 extends through-collars or bushings 27 and 28 mounted in side plates 29 and 30 of the tally-stri supportingframe. Sleeved on to the col are 27 and 28 there is provided a tubular casing which incloses a spiral spring 32 wound around the shaft 26. One end of the spring 32 is secured to the shaft 26'and the other end is secured against movement by means of a screw 34 extending through the casing 31 and engaging the collar 28. 7

It will thus be seen that as the tally-strip roll 9 turns with the unwindin ,of the tellystrip, the gear 20 will drive t e gear 21 to wind up the spring 32 until the tension thereon becomes so great that a slipping will take place between the gear 21 and the hub 22 which with the disk 23 forms a slip clutch.

The manner of unwinding the tally-strip will now be explained. The tally-strip 8 passes fIOl'l'l the roll'9 down in back of the platen to the right of the same and up in front of the platen so as to be exposed to the striking of type-bars 35 at the printing point. The tally-strip 8 is placed nearest the platen 1, next a carbon sheet on top of the tally-strip, and then a work-sheet on top of the carbon. The usual ribbon 36en ables the printing on the Work-sheet while fthe carbon enables the printing on the tally strip. The free end ofthe tally-strip is extended up into a slot 37 provided in a tubular reel 38 to rotate between side plates 29 and 30.

The reel 38 is positively driven so as to wind up the tally-strip 8, as the work is written on line by line. To do this, on the left hand end of the reel there is provided ,a gear 39 which is driven by a gear 40. The

gear 40 is connected to be driven by the shaft 12 which is provided with a ratchetwheel 42 driven by a pawl 43, the pawl 43 is pivoted on a rocker 44 and held in engagement with the ratchet wheel 42 by means of-a spring 45. The rocker 44 is actuated by means of a link 46 connected to the slide 6 so as to be actuated when the line-space lever 7 is operated to rotate the platen 1. That is to say that the platen 1 and the reel 38' a have a common drive. The gearing and ratchets however are so designed that the tally-strip will preferably have a drive of considerably less magnitude than that given the work-sheet by the platen. This will give fairly wide line-spacing for the-platen and close or condensed line-spacing for the tally-strip.-v

As the work-sheet and tally-strip are to have a differential movement, it is preferable that the work-sheet be somewhat wider than the tally-strip, so that spring actuatedfeed and pressure rollers 47 may act on the side edges of the, work-sheet and still clear the; tally-strip 8 beneath the work-sheet, as

The rollers 47 may be shown in Fig. 1. brought into play. and released in the usual manner from a finger-piece 48 through the connecting mechanism indicated in general at 49. g

In this ty e of work, the work-sheets are 'tal'ly strip' remains on the machine, offering acontinuous surface to'aceumulate the rec inserted an removed one by one while the 0rd of the several independent items on the different work-sheets.

It is sometimes desirable to interrupt connections betweenthereel which winds up -the tally-strip and the drive therefor. To

do this, the gear 40 is not directly connected tothe shaft 12, but is splined on a sleeve 50 which is secured'to the shaft 12.- The gear formed on thgthub 22. This will furnish a' drag on the tally-strip 8 preventing the 40 is normally held in register with the gear 39 by means of a spring 51, but can be shlfted sldewlse out of mesh with the'gear 39 against the tension of the. spring fil, by

. 'meansof a shift rod 52. The shift 'rod52 is provided with-a head 53, engaged by a cam 54, formed on a lever 55, pivotally mounted on the shaft 12. This lever has a finger-piece 56, so that it may be rotated for wardly tocam the shift rod 52 towardthe] left and disengage the gear 40 fromthe gear 39. A depression 57 is provided in the cam lever 5 toengage the head 53 atjthe end of the stroke of the lever, whereby the lever is revented from-accidental return.

ltility of the device will as readily 'understoodwhen taken in connection with the above description. vThe tally-strip and work-sheet with the'carbon-sheet between are properly adjusted on the platen 1. Aftera line 15 written the lever 7 is operated to give the desired line-space advance move-- ment to the work-sheet. Throu h the'com.

nected gearing, the reel38 wil be turned at the same time an amount, however,pref-I erably less than the line-space movement. of the work-sheet; As the tally-strip I 8 is drawn on, it unwinds from the roll of pa er a 9, thereby turning the gears 20, 21 and t us winding up the spring 32 until a given maximum tension thereof is obtained. Any further tendency to wind will merely cause a slipping betweenthe gear 21 and the clutch platenl and the work-sheet from advancing the tally-strip by friction an amount greater than that which the reel 38 provides for. If

the tally-strip 8should be advanced around the platen 1, a greater distance than desired, as in suddenly removing the worksheet from the platen, preparatory to work-sheet on the platen, then the spr ng 32 and the friction clutch 21, 22 and 23 will yield preventin either the work-sheet or the tally-strip rom being torn. When the excessive pull on the tally-strip 8 has ceased, the spring 32 will then rewind the paper roll 9 ina reverse direction, taking up the slack accidentally unwound.

, improvements may be used without others Having thus described my invention, ,I

Variations may be resorted towithin the scope of the nvention, and portions of'the claim: p j

1. In a typewriting machine, the combiline-feedin the putting a newnation with a revoluble platen, of a any strip delivery spobl'from which a strip is led around the platen, means to engage-the side margins of aqwork-sh'eet wider than'the. tally-strip, to press the Work-sheetSagainstv the platen to travel therewith and-permit,

relative travel between the work-sheetl;and"- the tally-strlp, means for; simultaneously the platen and the tally-fstripl but at a su stantlally'greater speed fo'r'jthe platen and work-sheet than for the tally-1 strip, whereby both the work-sheet andfthe platen tend by friction to advance the tauy;

strip unduly, and spring means forauto-f matically retracting the tally-strip after "as latter is unduly advanced.

, Mao a typewriting machine, the combination with a revoluble platen, of a any, 1? f strip fdelivery spool from -which a strip is led aroundthe'platen, means to efngageth,

side margins of a work-sheetwide'r' than the tally-strip, to "press the work-sheet against laten' to travel'therewith and permit relative travelbetween the work-sheet and the tall -strip,' means for' simultaneously line-fee ing5 'but'at a en the platen and the tally-strip stantially greater speed for the Plate and keet than for the telly:

strip, whereby strip unduly, spring means for automati: cally retracting ter is unduly advanced, and a slip connection for limiting the degree of-spring drag on the tally-strip.

holding a work-sheet and a tally-strip, of

3. The combination with a platen for both the'work-sheetandthe? platen tend by frictionto advance the tally-H v. v the tally-stripafter thelatmeans for feeding said work-sheet by rotating said platen, separate advancing means for said tally-strip. a connected drive for said platen and said advancing means, means for disconnecting the advancing means of the tally-strip to permit independent driving of the platen, and a lock for preventing accidental operation of the disconnected advancing means. l

4. The combination with aplatenadapted to support a tally-strip, of unwinding means .,for drawing said tal1ystrip from a roll around said platen, a spring, means for supporting said roll, and a driving connection enabling said roll and its supporting means a to wind up said spring as the tally-strip unwinds, said tally-strip.

5. The combination with'a platen adapted to support a tally-strip, of unwinding means for drawing said tally-strip from a roll so as to maintain the tension on aroundsaid platen, a spring, means for supporting said roll, and a driving connection enabling said. rolland its supporting means to wind up said spring as the tallystrip' unwinds, so as to maintain, the tension on said tally-strip, said driving connection including a slip clutch acting to pre ent an overwinding of said spring.

6. The combination with to support a tally-strip, of unwinding means for drawing said tally-strip from a roll around said platen, a pair of spool heads engaging said roll forming a spool thereof,

a a spring, and a train of gearing from one 'around said platen, supporting means for sion on said spring,

said roll, a shaft, a spring fixed to one end of said shaft and fixed at the other end relatively to said shaft, and a train of gearing having a slip connection to said shaft and connected to said roll, so as to enable said roll as it 'unwinds to put a limited ten;- Which will act back on said tally-strip.

8. The combination with a platen supporting a tally-strip, of unwinding means for drawing'a tally-strip from a roll of the same around the platen, a shaft, .a spring connected at one end to said shaft, and fixed at the other end relatively to said shaft, a hub fixed to said shaft, a disk, on

a platen adapted 'mine the maximum tension a spring which may said'hub, a gear mounted between said hub and said disk, spring means'for maintainingfrictional connection between said gear and both said hub and said disk, and a second gear connected to said roll meshing with said first gear, so as to enable said roll to put a tension on said spring as the tallystrip is unwound, whereby said spring will maintain said tally-strip taut on said platen. 9. The combination of a revoluble platen, a shaft, a tally-strip delivery spool detachably connected to said shaft, a spring, and means whereby said shaft when driven by said spool may tension said spring, said tensioning means including a slip connection between the shaft and the spring, to deterof the spring. 10. The combination of a revoluble platen, a shaft, a tally-strip delivery spool detachably connected to said shaft, a second shaft, be tensioned by means ofs'ai d second shaft, and means, includinga 'slip connection, for enabling thespool shaft to turn the spring shaft to tension the spring to a, point determined by said slip connection.

I I FREDERICK A. HART. WVitnesses:

ARTHUR A. JOHNSON,

JENNIE P. Tnonnn, 

